NT Screening Ultrasound

What is an NT screening ultrasound?

An NT screening ultrasound is a test your provider can order to determine your risk of having a child with certain chromosomal problems (such as Down Syndrome). It is important to note that this test does not guarantee a normal or abnormal pregnancy; it can only determine if there is an increased risk of a chromosomal problem being present.

How should you prepare for the test?

To prepare for the test, you will be asked to finish drinking 32 ounces of water one hour before your appointment time. You should not use the restroom for at least 30 minutes before your appointment. No other preparation is needed.

What happens during the test?

There are two parts to the ultrasound study. First, the ultrasound tech will scan across your lower abdomen while your bladder is full. This part of the test can take between 15-20 minutes. Your baby will be measured and the heart rate documented. The ‘nuchal translucency’ will then be measured. The nuchal translucency (or NT) is a space visible on the back of neck that can be seen on a developing fetus between 10-13 weeks.

The second part of the test will involve a blood draw that will be sent to the genetic laboratory for testing. The results of your test will be calculated using the measurements taken during your ultrasound as well as your blood sample.

The ultrasound technologist will take pictures during your study and these, along with a report, will be sent to your provider for review.

When do I get the results?

Please note the technologist is not a doctor and is unable to review or discuss your results with you. Our office will contact you when the final test results are available.

Quick Facts
  • Checks for certain problems

  • Done at 10-13 weeks

  • Ultrasound plus blood test

OB/GYN Doctors